| AKERSHUS KULTURVERNRÅD CVR 899203062 | BoardBoard of Directors | Since 2020 | — | Active |
| ULLENSAKER KULTURRÅD CVR 915464297 | BoardBoard of Directors | Since 2023 | — | Active |
| MIA - MUSEENE I AKERSHUS STI CVR 974235390 | BoardBoard of Directors | Since 2026 | — | Active |
| ULLENSAKER HISTORIELAG CVR 993149896 | BoardBoard of Directors | Since 2026 | — | Active |
| KNUT H. NAFSTAD CVR 917875324 | OwnerOwner | Since 2016 | — | Active |
| LØNNEBO BOLIGSAMEIE CVR 989280325 | BoardChairman | Since 2023 | — | Active |
| NORSK HYDRO ASA CVR 914778271 | OwnerLegal Owner | Since 2025 | 0.0% | Active |
| STOREBRAND ASA CVR 916300484 | OwnerLegal Owner | Since 2025 | 0.0% | Active |
| SPAREBANK 1 ØSTLANDET CVR 920426530 | OwnerLegal Owner | Since 2025 | 0.0% | Active |
| EQUINOR ASA CVR 923609016 | OwnerLegal Owner | Since 2025 | 0.0% | Active |
| SPAREBANK 1 SMN CVR 937901003 | OwnerLegal Owner | Since 2025 | 0.0% | Active |
| DNB BANK ASA CVR 984851006 | OwnerLegal Owner | Since 2025 | 0.0% | Active |
| YARA INTERNATIONAL ASA CVR 986228608 | OwnerLegal Owner | Since 2025 | 0.0% | Active |
| SELVAAG BOLIG ASA CVR 992587776 | OwnerLegal Owner | Since 2025 | 0.0% | Active |
| GJENSIDIGE FORSIKRING ASA CVR 995568217 | OwnerLegal Owner | Since 2025 | 0.0% | Active |
| BORREGAARD ASA CVR 998753562 | OwnerLegal Owner | Since 2025 | 0.0% | Active |